Astragalus laxmannii

Astragalus laxmannii, the standing milkvetch, Tanana milkvetch, or Laxmann's milkvetch, is a species of flowering plant in the family Fabaceae. It is native to Kazakhstan, Siberia, Mongolia, China, Korea, Japan (where it is called ムラサキモメンヅル (murasaki momenjiru - lit. purple cotton vine)), Canada, and the northwestern and north-central United States. A perennial reaching , it is typically found in dry soils with little organic content in otherwise wetter areas. Asian populations were previously considered to be a separate species, Astragalus adsurgens .

Subtaxa

The following subspecies are accepted:

• Astragalus laxmannii subsp. laxmannii – Kazakhstan, Siberia, the Russian Far East (except Sakhalin, the Kurils, and Kamchatka), Mongolia, China, Korea, Japan
• Astragalus laxmannii subsp. robustior – Canada (but not Nunavut or east of Ontario), northwestern and north-central USA (but not Kansas, Oklahoma, Wisconsin, Illinois, or Missouri), and Utah and New Mexico
• Astragalus laxmannii subsp. viciifolius – east-central Alaska, southern Yukon

References